Silicon Valley&#39;s &#39;Unicorns&#39; May Be Mythical, Too

There has been an interesting development in the lexicon of Silicon Valley the past couple of years — a new way to identify startups that have become really successful. Startups that are valued at a billion dollars or more are called unicorns.
more info: http://www.marketplace.org/topics/economy/silicon-valleys-unicorns-may-be-mythical-too
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